Supersonic airplanes have carried men at more than 2,000 miles per hour and there are reasons to believe that this speed will be doubled by 1960 or so.
Igor SikorskyAt that time [1909] the chief engineer was almost always the chief test pilot as well. That had the fortunate result of eliminating poor engineering early in aviation.
Igor SikorskyIt would be right to say that the helicopter's role in saving lives represents one of the most glorious pages in the history of human flight.
Igor Sikorsky